Filter



w. A. DANIEL.

FILTER.

APPLICATION FILED OCT-16. 1919.

Patented Nov. 2, 1920.

UNETEQ STATES earner ori ice.

WILLIAM A. DANIEL, OF SAN ANTONIO, TEXAS, ASS'IGNOR T JESSE B. WEBB, OF SAN ANTONIO, TEXAS.

FILTER.

Specification of Letters Patent.

Application filed October 16, 1919. Serial No. 381,009.

cleaning agent may be automatically re lieved of the accumulated dirt and rendered fit for re-use. Incidental objects will appear in the course of the following descrip tion, the invention being illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of a filter embodying my improvements; 7

Fig. 2 is a vertical section of the same;

Fig. 8 is a plan view thereof;

Fig. 4 is a plan view of the float;

Fig. is a plan viewof one of the filtering plates.

In carrying out my invention, I employ a supporting frame which may conveniently be composed of a plurality of standards 1 formed of angle bars having a V or U shape in cross section, as shown most clearly in Fig. 3. Near the upper ends of these standards, I secure thereto other angle bars 2 and at an intermediate point at the height of the standards I secure similarbars 3. By referring to Fig. 8, it will be noted that the standards are arranged in triangular relation so that the bars 2 and 3 will extend under or intersect the circumferences of containers disposed between the standards. Upon the upper bars 2, I support a container 4 which is preferably cylindrical and may be of any convenient dimensions, said container being fitted with a removable cover 5 which, when in place, will fit snugly thereon and thereby form a substantially air-tight joint to prevent evaporation of the liquid. The bottom 6 of this container is slightly dished so that the sediment will collect at the center thereof and may be easily removed as well as prevented from passing out through the pipe 7, said pipe 7 being connected with the container through the side of the same and above the bottom thereof, as clearly shown. Within the container, I provide lugs 8 at a point above the end of the pipe 7 and a float will rest upon the said lugs when there s no liquid in the container. This float 1s a hollow body, preferably constructed of light sheet metal, and of slightly less diameter than the inner diameter of the container so that the liquid poured into the container may pass around the edge of the float, as will be readily understood, and will not flow heavily upon the dirt in the bottom of the container and stir up the same, the washing of said sediment into the pipe 7 being thereby avoided. Below the container 4, a second container 10 is disposed between the supporting standards and this container is also provided with a tightly fitting cover 11 which may be removed when it is desired to clean the container. The bottom of the lower container 10 is tapered, as shown at 12, and at its lowest point is equipped with an outlet nozzle '13 containing a cut-off valve 14 and a pan or other receptacle 15 is disposed below the said nozzle and in communication therewith so that the dirt and other impurities collected in the tapered bottom 12 may be washed into said pan or receptacle 15 when necessary. The pipe 7 is equipped at any point of its length with a cut-off valve 16 so that the flow may be regulated and the lower end of the pipe communicates with the lower container through the tapered bottom'thereof, as shown at 17'. A second cutoff valve 18 may be provided at the lower end of the pipe 7 if so desired. Within the container 10 and above the tapered portion 12 thereof, I provide a filtering plate 19 consisting of a hollow disk-like body having perforations 20 in its upper and lower sides and preferably containing a filtering material such as granular carbon. Around the edge of the filtering plate, I secure a strip 21 of felt or similar elastic material which will serve as a packing between the plate and the wall of the container so as to hold the filtering plate in place and prevent lealr age of the oil or gas around the edge of the plate. Spaced from the lower filtering plate 19 is an upper filtering plate 22 identical in construction with the lower plate and also containing a granular filtering material. Each filtering plate is equipped with a knob or other handle 23 so that it may be conveniently removed when it is necessary to clean or repair the apparatus. Between the two filtering plates, I place a filtering Patented Nov. 2, 1920;

compound, indicated at 24, which may be of i any material suitable for the purpose,

Above the plate 22, a valved outlet nozzle 25 is fitted in the wall of the container 10 so that the cleaned gasolene, kerosene or oil may be withdrawn as needed for use.

The operation of the apparatus will, it is thought, be readily understood. The used liquid, containing dirt and grit which has been collected therein in the course of the cleaning operations, is'poured into the container 4, the valve 16 at this time being closed. The float 9 will, of course, rise with the liquid and when said floatreaches the top of the container the filling of the container will temporarily cease and the cover 5 be placed in position; The valve 16. may now beiopened whereupon the liquid will flow'through the pipe 7 into the tapered bottom 12 of the lower container and will rise through thefiltering plates 19 and 22 and the intermediate filtering compound. .The

impurities in the liquid will settle by grav-. ity within the tapered bottom 12 so that the cleaning operation will be thoroughly. performed by the settling of impurities to the bottoms of the two containers. As the volume of the liquid, however, in the tapered portion12 of the lower container increases, the liquid will rise through the filtering plates and the intermediate filtering compound so that the material eventually reaching the chamber above the upper filtering plate will be freed of all impurities and in a condition for reuse. Asthe quantity of liquid in the upper container decreases the valve 18 may be closed so as to cut-off access of additional uncleaned liquid to the lower container and additional liquid may then be poured into the upper container and fiow to the lower valve 18. When cleaned liquid has been withdrawn from the lower container 10, the valve 18 may be opened and the fiowxthen set up will serve to automatis cally remove the impurities, as previously stated. l/Vhen it is desired to remove the collected dirt and sediment, the valve 18 is closed and the valve 14: opened,whereupon the sediment in the tapered bottom 12 will removed and the filtering plates and filter-' ing compound withdrawn through the top of the lower container as will be readily understood.

My apparatus is eXceedingly simple in the construction and arrangement of its parts and it is entirely automatic in its operation so tha-tno particular attention is needed in order to keep the same in proper condition. Having thus described the invention, what is claimed as new is:

1. An apparatus for the purpose set forth comprising an upper container, a float therein having its edge spaced slightly from the wall of the container, devices within the container to limit the descent of the fioat and support the same in its lowest position, a lower container, a pipe leading from the upper container at a point between the bottom thereof and the float-supporting de vices therein into the bottom of the lower container,'a filteringmedium in the lower container above the'bottom" thereof, a sediment discharge in thebottom of the lower container, and an outlet'from said container above the filtering medium therein.

2. A filter comprising an upper container, a float therein having an area nearly equal to the horizontal interior area of the container, a lower container, a filtering medium in the lowerportion of the lower container,

and means for conveying material to be filtered from the upper container at a point below thefioat into the lower container at a point below the filtering medium therein.

In testimony whereof I afliX my signature.

, 7 WILLIAM A. DANIELQI -1 

